Hashimoto thyroiditis
Mononuclear parenchymal infiltration with well-developed germinal centers
Papillary thyroid cancer
Branching papillary structures with concentric calcifications (Psomma bodies), ground glass nucleus with intranuclear grooving
Subacute/deQuervain’s thyroiditis
Mixed infiltration with occasional multinuclear giant cells (granuloma)
Riedel’s thyroiditis
Extensive stromal fibrosis that extends beyond thyroid capsule
klinefelter
XXY, hypogonadism, small testes, infertility,